From: Geliang Tang <tanggeliang@kylinos.cn>

Extract the main part of check_expected() in userspace_pm.sh to a new
function mptcp_lib_check_expected() in mptcp_lib.sh. It will be used
in both mptcp_john.sh and userspace_pm.sh. check_expected_one() is
moved into mptcp_lib.sh too as mptcp_lib_check_expected_one().

Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
---
 .../testing/selftests/net/mptcp/mptcp_lib.sh  | 30 +++++++++++++++++
 .../selftests/net/mptcp/userspace_pm.sh       | 33 ++-----------------
 2 files changed, 32 insertions(+), 31 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_lib.sh b/tools/testing/selftests/net/mptcp/mptcp_lib.sh
index ea39392c68e7..44491f18ed17 100644
--- a/tools/testing/selftests/net/mptcp/mptcp_lib.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_lib.sh
@@ -438,3 +438,33 @@ mptcp_lib_print_title() {
 	# shellcheck disable=SC2059 # the format is in a variable
 	printf "${MPTCP_LIB_TEST_FORMAT}" "$((++MPTCP_LIB_TEST_COUNTER))" "${*}"
 }
+
+# $1: var name ; $2: prev ret
+mptcp_lib_check_expected_one() {
+	local var="${1}"
+	local exp="e_${var}"
+	local prev_ret="${2}"
+
+	if [ "${!var}" = "${!exp}" ]; then
+		return 0
+	fi
+
+	if [ "${prev_ret}" = "0" ]; then
+		mptcp_lib_pr_fail
+	fi
+
+	mptcp_lib_print_err "Expected value for '${var}': '${!exp}', got '${!var}'."
+	return 1
+}
+
+# $@: all var names to check
+mptcp_lib_check_expected() {
+	local rc=0
+	local var
+
+	for var in "${@}"; do
+		mptcp_lib_check_expected_one "${var}" "${rc}" || rc=1
+	done
+
+	return "${rc}"
+}
diff --git a/tools/testing/selftests/net/mptcp/userspace_pm.sh b/tools/testing/selftests/net/mptcp/userspace_pm.sh
index bc2f0184b1eb..6d0862a1b68d 100755
--- a/tools/testing/selftests/net/mptcp/userspace_pm.sh
+++ b/tools/testing/selftests/net/mptcp/userspace_pm.sh
@@ -5,7 +5,7 @@
 # code but we accept it.
 #shellcheck disable=SC2086
 
-# Some variables are used below but indirectly, see check_expected_one()
+# Some variables are used below but indirectly, see verify_*_event()
 #shellcheck disable=SC2034
 
 . "$(dirname "${0}")/mptcp_lib.sh"
@@ -228,39 +228,10 @@ make_connection()
 	fi
 }
 
-# $1: var name ; $2: prev ret
-check_expected_one()
-{
-	local var="${1}"
-	local exp="e_${var}"
-	local prev_ret="${2}"
-
-	if [ "${!var}" = "${!exp}" ]
-	then
-		return 0
-	fi
-
-	if [ "${prev_ret}" = "0" ]
-	then
-		mptcp_lib_pr_fail
-	fi
-
-	mptcp_lib_print_err "\tExpected value for '${var}': '${!exp}', got '${!var}'."
-	return 1
-}
-
 # $@: all var names to check
 check_expected()
 {
-	local rc=0
-	local var
-
-	for var in "${@}"
-	do
-		check_expected_one "${var}" "${rc}" || rc=1
-	done
-
-	if [ ${rc} -eq 0 ]
+	if mptcp_lib_check_expected "${@}"
 	then
 		test_pass
 		return 0
-- 
2.40.1